Improvement in automatic fire-alarms



'J. M. de GELIS. Automatic Fire-Alarm.

No. 2o1,|67. Patented March 12,1878.

i J a? WITNESSES: INVENTOR:

&57@@/ V A Y J ATTORNEYS.

W, PEIERS, PHOTO-UTHOGRAPHEQ, WASHINGTON n C UNITEDSTATES PATENT OFFICE.

JOSE M. DE OELIS, OF NE? YORK, N. Y.

IMPROVEMENT I N AUTOMATIC FIRE-ALARMS.

Specification forming part of Letters Patent No. 201,167, dated March12, 1878 application filed February 8, 1878.

To all whom it may concern:

Be it known that I, J osn MIGUEL DE Cams, of the city, county, and Stateof New York, have invented a new and Improved Automatic Fire-Alarm, ofwhich the following is a specification:

In the accompanying drawings, Figure 1 represents a front elevation; andFig. 2 a horizontal section on line :20 00, Fig. 1, of my improvedautomatic fire-alarm.

Similar letters of reference indicate corresponding parts.

This invention has reference to a self-acting device that may be used inconnection with an electric gun or other alarm whenever the temperaturerises above a certain degree, so as to indicate the presence of fire.

The invention consists of a spring-acted arm with en d button or hammerthat is retainedby a block of wax, tallow, or other material, melting atacertain temperature, the block being supported in a slotted cup infront of the arm, so that the same is released whenever themelting-temperature of the block is reached, and thereby the arm throwninto connection with the alarm device.

By referring to the drawings, A represents the base-plate of my improvedautomatic alarm device, which plate is attached by screws or otherwiseto the wall, sidewise, below or above an electric gun or other alarm. Tosuitable bearings of plate A is hung an arm,

B, that is connected at its swinging point to a coiled band-spring,a,,so as to be readily thrown from its position at one side of its pivotto a position on the other side of the same. The arm B is provided atits outer curved end with a button or hammer, a, that forms contact withan electric or other alarm when being thrown by the spring around itspivot. The arm is retained on the plate at the side diametricallyopposite to the alarm device by a block, 0, formed of tallow,spermaceti, white or yellow wax, or other equivalent materials that meltat a temperature of comparatively low degree, the block being supportedin a slotted casing or box, D, so that the spring-arm'cannot escapeuntil the block is melted at a temperature corresponding to itsmelting'point.

The different substances used for forming the block melt at temperaturesranging between 92 and 155, which is sufficiently high to indicate thepresence of fire.

The release of the arm by the melting of the block causes the suddenthrowing over of the arm onto the alarm device, so as to either closethe electric circuit and ring the bell'alarm or explode a gun or giveany other suitable alarm.

The device is of very simple construction, and may be used withadvantage in protectin g dwellings, warehouses, factories, and otherplaces against danger of fire.

Having thus fully described my invention, I claim as new and desire tosecure by Letters Patent- 1. The combination, with arm B, hung inbearings of plate A, of a button at one end, a coiled bandspring at theother, and a retaining-block of tallow or equivalent in a box, D, as andfor the purpose specified.

2. The combination, with an electric or other alarm, of a hinged andspring-acted arm, retained at a position at that side of its pivotopposite to the alarm device by a block of wax or other materialsmelting at a low temperature, the block being seated and supported in aslotted casing or box, substantially as and for the purpose described.

JOSE MIGUEL DE'GELIS.

Witnesses:

C. Snnewrcx, PAUL GoEPEL.

